3-11
Chap. 3 OPERATION USING THE KEYPAD
Hexadecimal expression
A 4-bit binary number can be expressed in hexadecimal (1 hexadecimal digit). Table 3.10 shows the correspondence between
the two notations. The hexadecimals are shown as they appear on the LED monitor.
Table 3.10 Binary and Hexadecimal Conversion
Binary Hexadecimal Binary Hexadecimal
0 0 0 0
0
1 0 0 0
8
0 0 0 1
1
1 0 0 1
9
0 0 1 0
2
1 0 1 0
a
0 0 1 1
3
1 0 1 1
b
0 1 0 0
4
1 1 0 0
c
0 1 0 1
5
1 1 0 1
d
0 1 1 0
6
1 1 1 0
e
0 1 1 1
7
1 1 1 1
f
3.4.5 Checking I/O signal status -- Menu #4 "I/O Checking" --
Using Menu #4 "I/O Checking" displays the I/O status of external signals including digital and analog I/O signals without using
a measuring instrument. Table 3.11 lists check items available. The menu transition in Menu #4 "I/O Checking" is shown in
Figure 3.4.
Figure 3.4 Menu Transition in Menu #4 "I/O Checking"
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